Hoist



Jan. 28, 1930. A'. s. HUGHES 1,744,897

HoIsT original Filed April 19, 1926 :s sheets-sheet 1 ahorn,

A. S. HUGHES Jan. 28, 1930.

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Jan. 28, 1930. A. s. HUGHES HOIST Original Filed April 19, 1926 5Sheet-Sheet 3 WCQM.

Stratum# Patented Jan. 28, 1930 UNITED STATES ARTHUR SHERIDAN `HUGHES,lOli" MANSFIELID, OHIO i HoIs'r Application ined April 19,1926, serialNo. 103,019; Renewed May 22, 1929.

This inventionrelatesto abooster hoist, which vis adapted to be used inconnection with a truclrchassis and body for tilting the latter todumpits load. y

' The gener'ai object of the invention is Vto provide an improvedconstruction of this nature which is simple and inexpensive, and

" which' may be attached" 'tol an ordinary truck e having" either anexpress `or platform body 1o and, without any alteration. inthe-construction ofthe truck or body, to convert the same into a dumpingtruck.' l

Claim for the pafwl and ratchet mechanism per se is 'not presented`herein., but rconstitutes the subject matter of the parent application,

filled' August 4,1925, Serial No. 48,086;

The detailed construction of the preferred embodiment of my invention,together with its objects and advantages, will be more-particularlydescribed in connection with the ac-v companying drawings constituting apart hereof'.

Inl the drawings Figure 1 is aYperspecti-ve View of thebooster T ilioistapplied toa chassis with ka platform ody., e

Figure 2' is a planview ofcertain partsof 'thezmechanism shown in Figure1:,.otherparts being shown in section.

- Figure 8 isa section taken on the lineS--S- of Figure 5.

Figure 91isa detail sectional view of the lowerhinge member.

Figure 10 is a detail sectional view of the upper hinge member, as usedin Figures l*v and 2.' i

Figure 1'1Y is a `detail sectional View rof the upper hinge member, asused in Figure 5.

Figure 3 is a side elevation VWith'parts broken away and other parts'shown in sec Figure 5y is aview, partly in section and In the drawings,the improvements are shown as being applied to a truck chassis havinglongitudinal beams 1, midwayy 4between Which is a transmission shafthouse ing 2, a cab 3 being securedto the front end ,V55 ofthe chassis. l

In the embodiment shown in Figures 1, 2 and 3, the body of the truckcomprises a platform 4, beneath which are secured longitudinal beams 5.This platform body is con-l nected tothe chassis by a pair of hinges,each of which comprises an upper hinge member 6 anda lower hinge member7 vconnected by a pintle 8. The VVupper hinge member is securely clampedto the beam 5 by means of bolts 9. and the lower hinge member issecurely bolted to the lprojecting portion 10 of 'the chassis frame,andhas at its front edge a downturned flange 11, which engages the frontside thereof.

Toward the front end of the platform body, a Z bar 12 is securedtransversely to the under sides of vthe beam 5by means of bolts13, oneof the flanges 14 being cut off 'so that itvfits in: the space betweentlie beams; 5. Angle@5 irons 15 are Welded, or otherwise secured, to thelowerfiange of the Z bar 12 in spacedrelationl to each other, andsupport a h0rizontal bolt 16 to which a pair of links 17 are connected.These links are held spaced by ato spacing sleeve 18 surrounding thebolt 16, and are actuatedr by means vhereinafter described to raise thefront end of the body to tilt it about its hinges to dump the load.

For `supporting the dumping mechanism an langle bar 19 reststransversely on the beams 1 in rear of the cab 3, and is secured toplates 20, which are held'by the same bolts which engage the lugs 21 tobolt the cab toL the chassis frame. Guiding lugs 22l k90 aresecured tothe vertical flange of the angle bar 19 for receiving the front ends ofthe beams 5 when the platform body is in hori- Zontal position.

Longitudinal bars 23 are secured at their",S5 front ends to the Vanglebar r19, and are supported at their rear ends on -a round transverse baror shaft 24, which is clamped to the longitudinal beams 1 by bolts 25,which are inserted through the ends of the shaft 24e, 1U@

and through clips 26 which are slipped over the lower flanges of thebeams of the chassis frame 1. It is preferred to use four of the bars23, suitably spaced, as shown in Figure 2. These bars insure strengthand stability to the hoist, although they may be made comparativelylight, and their cost is inconsiderable.

A segment- 27 is journaled on the shaft 24, and has an elongated hub 28formed with radially projecting arms 30, which straddle the transmissionshaft housing 2, and are pivotally connected to the lower ends of theinks 17, so that by rotating the segment 27 the links 17 may be raisedor lowered to tilt the platform 4, or to restore it to a horizontalposition. The hub 28 is held against movement longitudinally of theshaft 24 by spacing sleeves 29.

An intermediate shaft 31 is mounted in the longitudinal bars 23, and itsends rest 0n the beams 1, the shaft 4being secured in position by an eye32, which is connected to one end of the shaft, and is bolted to theadjacent bar 23. A pinion 33 is revolubly mounted on the shaft 31, andmeshes with the segment 27. A gear 34 is integrally or otherwise securedto the pinion 33, and the pinion and gear are held against movementlongitudinally of the shaft 31 by spacing sleeves 35.

A crank shaft 36 is journaled in bearings 37 secured to the bars 23 nearthe front ends thereof, and has a pinion 38 secured thereto which mesheswith the gear 34. The outwardly projecting portion of the crank shaft 36is journaled in a bearing member 39, which is secured to the outwardlyextended portion of the channel bar 19. The crank shaft 36 may berotated by means of a crank 40 attached to its outer end. A ratchetwheel 41 is mounted on the shaft 36 outside of the bearing member 39 andis provided with a collar 42 which is secured to the shaft. The pinion38, adjacent to one of the bars 23, prevents longitudinal movement ofthe crank shaft in one direction while the collar 42 preventslongitudinal movement in the other direction.

The bearing 39 extends upwardly and supports a pin or bolt 44, on whicha pawl 45 is pivotally supported. An expansile coil spring 46 on thebolt 44 urges the pawl 45 toward the bearing member 39. The hub of thepawl is formed with two lugs 47, either of which is adapted to engagethe inclined surface of a lug 48 projecting upwardly from the bearingmember 39. The pawl is reversible. When it is in the position shown inFigures 1 and 3, and the crank shaft 36 is rotated to tilt the body, thepawl will ride over the teeth of the ratchet wheel 41, and willautomatically engage successive notches to prevent backward rotation ofthe shaft. lVhen the platform is to be restored to horizontal position,the position of the pawl is reversed. In either position of the pawl,one of the lugs the pawl might be kicked over to reverse position andcause breakage.

lVhen the mventlon 1s used 1n connection with an express body 49, asshown in Figure 5, the upper hinge member 6 is replaced by a hingemember 50, which is in the form of a channel bar adapted to embrace thelower edge of one of the longitudinal beams 51 of the express body. Thehinge member 50 is secured to the express body by bolts 52, which passthrough holes formed in the outturned flanges 53 of the hinge member. Itis preferred to form the hinge member 50 with a plurality of hinge lugs54, any one of which is adapted to be engaged by the pintle 8, so thatthe body may be adjusted forwardly or backwardly to accommodate it tocabs of different sizes. An angle brace 55 is bolted to the under sideof the body 49, and is provided with a lug 56 to which the upper ends ofthe links 17 are pivotally connected. The sha e of the brace 55 is suchas to fit around t e cross bar 57 used on the standard express body andis secured by the same bolts 58.

From the foregoing description, it will be understood that the inventionmay be applied to the ordinary truck to convert the same into a dumpingtruck without any alteration in the construction thereof. It is notnecessary to drill any holes either in the frame or in the body of thetruck. All of the different parts of the hoist are directly connected tothe frame of the chassis, or to the body and supported thereon. Noadditional frame is necessary to support the bearings for the gears.This makes the device quite inexpensive, and its installation on thetruck may be effected with a small amount of labor.

While I have shown and described in detail the preferred embodiment ofthe invention, it is obvious that various modifications may be devisedin the size, shape and relative arrangement of the various parts withoutany material departure from the essential features of the invention; itis my desire, therefore, to include all such modifications within thescope of the appended claim.

What is claimed is:

A dumping attachment for trucks comprising a shaft, means for securingsaid shaft transversely of the truck chassis, a segment having a hubjournaled on said shaft, arms projecting from the hub, means forconnecting said arms with the truck body, a transverse bar adapted to besecured to the chassis frame with one end projecting outwardlytherefrom, longitudinal bars connecting said transverse bar to saidshaft, bearings secured to the front portions of said longitudinal bars,a crank shaft mounted in said bearings, a pinion secured to the crankshaft, an intermediate shaft secured to said longitudinal bars andresting on the frame of the chassis, gearing mounted on saidintermediate shaft and operatively connecting said pinion to saidsegment, and a bearing bracket secured to the outwardly projectingportion of said transverse bar, said crank rshaft also projectingoutwardly and being journaled in said bearing' bracket.

In testimony that I claim the foregoing as my own, I have hereto aixedmy Signature..

ARTHUR SHERIDAN HUGHES.

